Check Valves

Check valves are installed where backflow may happen. Typical locations include pump discharges, boiler lines, water supply and drainage networks, and oil, gas, or chemical pipelines.
This category includes lift-type and swing-type check valves. Products come in multiple materials, pressure ratings and installation styles. They work for standard media as well as corrosive, high‑pressure, or low‑pressure conditions. Applications cover industrial, municipal, and civil fluid systems.
Applications
Used in oil and gas transmission lines, storage and transport equipment, and refinery process lines to protect downstream equipment from backflow. Depending on material and structure, they handle corrosive chemicals, acids, alkalis, and industrial wastewater. Also widely used in HVAC circulation systems, boiler lines, water treatment equipment, and industrial fluid systems for one‑way flow control.
Reasons to Purchase
The valve prevents backflow by itself. No manual operation is needed. Different structures and sealing materials are available for different service conditions. Options include carbon steel, stainless steel, and special alloy check valves for water, oil, gas, or corrosive fluids. Connections: flange, threaded, and welded. Standards: DIN, ANSI, JIS, BS, GB. Suitable for pipeline contractors, pump OEMs, system integrators, export distributors, and long‑term project buyers. Backflow seal tests, pressure tests, and overall performance checks can be done before shipment.
Size Range
Standard sizes are in stock. Special sizes can be customized based on actual service conditions.